20110220231 has 2 divisors, whose sum is σ = 20110220232. Its totient is φ = 20110220230.

The previous prime is 20110220219. The next prime is 20110220243. The reversal of 20110220231 is 13202201102.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (20110220219) and next prime (20110220243).

It is a cyclic number.

It is not a de Polignac number, because 20110220231 - 2⁶ = 20110220167 is a prime.

It is a super-2 number, since 2×20110220231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20110220281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055110115 + 10055110116.

It is an arithmetic number, because the mean of its divisors is an integer number (10055110116).

Almost surely, 2^20110220231 is an apocalyptic number.

20110220231 is a deficient number, since it is larger than the sum of its proper divisors (1).

20110220231 is an equidigital number, since it uses as much as digits as its factorization.

20110220231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20110220231 its reverse (13202201102), we get a palindrome (33312421333).

The spelling of 20110220231 in words is "twenty billion, one hundred ten million, two hundred twenty thousand, two hundred thirty-one".